Is Rock Salt a Safe Option for Melting Snow and Ice on Your Roof?
The winter months see homeowners searching for ways to scrape away the snow and ice from their roofs. Rock salt is perhaps the most obvious choice in many situations, since one would use it for de-icing sidewalks or driveways. But is it really safe for the roof? Let’s examine the pros and cons of rock salt and rock salt shells with regards to other routes that are less harmful to the homeowner’s roof. How Rock Salt Works Rock salt (sodium chloride) reduces the freezing point of water, which inhibits ice from forming and melts snow. It’s widely used on roads, sidewalks, and driveways due to its cost-effectiveness. Yet, as effective as it is on horizontal surfaces, a salt roof situation can be quite different. Why Rock Salt Can Be Dangerous to Your Roof 1. Damage to Roofing Materials Rock salt is extremely corrosive. One pollution can damage shingles, metal flashings, and gutters, which will turn out to be very expensive if not monitored closely. Proper roofing maintenance ...